Window greenhouse



FIG. 1 is a perspective view of a window greenhouse showing my new design;

FIG. 2 is a reduced top plan view thereof;

FIG. 3 is a reduced front elevational view thereof;

FIG. 4 is a reduced rear elevational view thereof;

FIG. 5 is a reduced right side elevational view thereof, the left side being a mirror image;

FIG. 6 is a reduced bottom plan view thereof;

FIG. 7 is an enlarged fragmentary perspective view of the front, top and right corner;

FIG. 8 is an enlarged fragmentary perspective view of the front, top and left corner;

FIG. 9 is an enlarged fragmentary perspective view of the front, bottom, and left corner. 

The ornamental design for a window greenhouse, as shown and described. 